I find x-fold to be totally clear and intuitive for increases, but I find it weird for decreases. "We've decreased it by 5 times" sounds to me like "We've decre

I find x-fold to be totally clear and intuitive for increases, but I find it weird for decreases. "We've decreased it by 5 times" sounds to me like "We've decreased it by 500%", which it obviously doesn't mean. "We've decreased it to 1/5th", "we've decreased it by 80%" makes more intuitive sense to me. Maybe it is similar to miles/gallon vs liters/100km and depends on where you grew up. I feel like the usage frequency changed, but it could just be that I'm noticing it more.