-83.9% is the change from 354 to 57
Calculation steps:
[( 57 - 354 ) ÷ 354] x 100 = -83.9%
Formula
Percentage change = [(57 - 354) / 354] x 100
Subtract the new number by the original number
57 - 354 = -297
-297 ÷ 354 = -0.8389830508474576
-0.8389830508474576 x 100 = -83.9%