-63.59% is the change from 857 to 312
Calculation steps:
[( 312 - 857 ) ÷ 857] x 100 = -63.59%
Formula
Percentage change = [(312 - 857) / 857] x 100
Subtract the new number by the original number
312 - 857 = -545
-545 ÷ 857 = -0.6359393232205367
-0.6359393232205367 x 100 = -63.59%