-31.48% is the change from 937 to 642
Calculation steps:
[( 642 - 937 ) ÷ 937] x 100 = -31.48%
Formula
Percentage change = [(642 - 937) / 937] x 100
Subtract the new number by the original number
642 - 937 = -295
-295 ÷ 937 = -0.31483457844183566
-0.31483457844183566 x 100 = -31.48%