-61.96% is the change from 857 to 326
Calculation steps:
[( 326 - 857 ) ÷ 857] x 100 = -61.96%
Formula
Percentage change = [(326 - 857) / 857] x 100
Subtract the new number by the original number
326 - 857 = -531
-531 ÷ 857 = -0.6196032672112018
-0.6196032672112018 x 100 = -61.96%