-31.12% is the change from 932 to 642
Calculation steps:
[( 642 - 932 ) ÷ 932] x 100 = -31.12%
Formula
Percentage change = [(642 - 932) / 932] x 100
Subtract the new number by the original number
642 - 932 = -290
-290 ÷ 932 = -0.3111587982832618
-0.3111587982832618 x 100 = -31.12%