-74.56% is the change from 857 to 218
Calculation steps:
[( 218 - 857 ) ÷ 857] x 100 = -74.56%
Formula
Percentage change = [(218 - 857) / 857] x 100
Subtract the new number by the original number
218 - 857 = -639
-639 ÷ 857 = -0.7456242707117853
-0.7456242707117853 x 100 = -74.56%