-31.5% is the change from 943 to 646
Calculation steps:
[( 646 - 943 ) ÷ 943] x 100 = -31.5%
Formula
Percentage change = [(646 - 943) / 943] x 100
Subtract the new number by the original number
646 - 943 = -297
-297 ÷ 943 = -0.3149522799575822
-0.3149522799575822 x 100 = -31.5%