-59.16% is the change from 857 to 350
Calculation steps:
[( 350 - 857 ) ÷ 857] x 100 = -59.16%
Formula
Percentage change = [(350 - 857) / 857] x 100
Subtract the new number by the original number
350 - 857 = -507
-507 ÷ 857 = -0.5915985997666278
-0.5915985997666278 x 100 = -59.16%