-31.39% is the change from 943 to 647
Calculation steps:
[( 647 - 943 ) ÷ 943] x 100 = -31.39%
Formula
Percentage change = [(647 - 943) / 943] x 100
Subtract the new number by the original number
647 - 943 = -296
-296 ÷ 943 = -0.3138918345705196
-0.3138918345705196 x 100 = -31.39%