-58.29% is the change from 959 to 400
Calculation steps:
[( 400 - 959 ) ÷ 959] x 100 = -58.29%
Formula
Percentage change = [(400 - 959) / 959] x 100
Subtract the new number by the original number
400 - 959 = -559
-559 ÷ 959 = -0.5828988529718456
-0.5828988529718456 x 100 = -58.29%