-31.92% is the change from 943 to 642
Calculation steps:
[( 642 - 943 ) ÷ 943] x 100 = -31.92%
Formula
Percentage change = [(642 - 943) / 943] x 100
Subtract the new number by the original number
642 - 943 = -301
-301 ÷ 943 = -0.31919406150583246
-0.31919406150583246 x 100 = -31.92%