-37.11% is the change from 857 to 539
Calculation steps:
[( 539 - 857 ) ÷ 857] x 100 = -37.11%
Formula
Percentage change = [(539 - 857) / 857] x 100
Subtract the new number by the original number
539 - 857 = -318
-318 ÷ 857 = -0.3710618436406068
-0.3710618436406068 x 100 = -37.11%