-31.97% is the change from 588 to 400
Calculation steps:
[( 400 - 588 ) ÷ 588] x 100 = -31.97%
Formula
Percentage change = [(400 - 588) / 588] x 100
Subtract the new number by the original number
400 - 588 = -188
-188 ÷ 588 = -0.3197278911564626
-0.3197278911564626 x 100 = -31.97%