-37.69% is the change from 857 to 534
Calculation steps:
[( 534 - 857 ) ÷ 857] x 100 = -37.69%
Formula
Percentage change = [(534 - 857) / 857] x 100
Subtract the new number by the original number
534 - 857 = -323
-323 ÷ 857 = -0.37689614935822635
-0.37689614935822635 x 100 = -37.69%