-59.75% is the change from 636 to 256
Calculation steps:
[( 256 - 636 ) ÷ 636] x 100 = -59.75%
Formula
Percentage change = [(256 - 636) / 636] x 100
Subtract the new number by the original number
256 - 636 = -380
-380 ÷ 636 = -0.5974842767295597
-0.5974842767295597 x 100 = -59.75%