-56.82% is the change from 931 to 402
Calculation steps:
[( 402 - 931 ) ÷ 931] x 100 = -56.82%
Formula
Percentage change = [(402 - 931) / 931] x 100
Subtract the new number by the original number
402 - 931 = -529
-529 ÷ 931 = -0.5682062298603652
-0.5682062298603652 x 100 = -56.82%