-30.5% is the change from 636 to 442
Calculation steps:
[( 442 - 636 ) ÷ 636] x 100 = -30.5%
Formula
Percentage change = [(442 - 636) / 636] x 100
Subtract the new number by the original number
442 - 636 = -194
-194 ÷ 636 = -0.3050314465408805
-0.3050314465408805 x 100 = -30.5%