-30.58% is the change from 932 to 647
Calculation steps:
[( 647 - 932 ) ÷ 932] x 100 = -30.58%
Formula
Percentage change = [(647 - 932) / 932] x 100
Subtract the new number by the original number
647 - 932 = -285
-285 ÷ 932 = -0.30579399141630903
-0.30579399141630903 x 100 = -30.58%