-30.82% is the change from 636 to 440
Calculation steps:
[( 440 - 636 ) ÷ 636] x 100 = -30.82%
Formula
Percentage change = [(440 - 636) / 636] x 100
Subtract the new number by the original number
440 - 636 = -196
-196 ÷ 636 = -0.3081761006289308
-0.3081761006289308 x 100 = -30.82%