-62.19% is the change from 857 to 324
Calculation steps:
[( 324 - 857 ) ÷ 857] x 100 = -62.19%
Formula
Percentage change = [(324 - 857) / 857] x 100
Subtract the new number by the original number
324 - 857 = -533
-533 ÷ 857 = -0.6219369894982497
-0.6219369894982497 x 100 = -62.19%