-77.67% is the change from 636 to 142
Calculation steps:
[( 142 - 636 ) ÷ 636] x 100 = -77.67%
Formula
Percentage change = [(142 - 636) / 636] x 100
Subtract the new number by the original number
142 - 636 = -494
-494 ÷ 636 = -0.7767295597484277
-0.7767295597484277 x 100 = -77.67%