-83.71% is the change from 350 to 57
Calculation steps:
[( 57 - 350 ) ÷ 350] x 100 = -83.71%
Formula
Percentage change = [(57 - 350) / 350] x 100
Subtract the new number by the original number
57 - 350 = -293
-293 ÷ 350 = -0.8371428571428572
-0.8371428571428572 x 100 = -83.71%