-75.31% is the change from 636 to 157
Calculation steps:
[( 157 - 636 ) ÷ 636] x 100 = -75.31%
Formula
Percentage change = [(157 - 636) / 636] x 100
Subtract the new number by the original number
157 - 636 = -479
-479 ÷ 636 = -0.7531446540880503
-0.7531446540880503 x 100 = -75.31%