-83.33% is the change from 342 to 57
Calculation steps:
[( 57 - 342 ) ÷ 342] x 100 = -83.33%
Formula
Percentage change = [(57 - 342) / 342] x 100
Subtract the new number by the original number
57 - 342 = -285
-285 ÷ 342 = -0.8333333333333334
-0.8333333333333334 x 100 = -83.33%