-37.22% is the change from 857 to 538
Calculation steps:
[( 538 - 857 ) ÷ 857] x 100 = -37.22%
Formula
Percentage change = [(538 - 857) / 857] x 100
Subtract the new number by the original number
538 - 857 = -319
-319 ÷ 857 = -0.37222870478413067
-0.37222870478413067 x 100 = -37.22%