-59.74% is the change from 857 to 345
Calculation steps:
[( 345 - 857 ) ÷ 857] x 100 = -59.74%
Formula
Percentage change = [(345 - 857) / 857] x 100
Subtract the new number by the original number
345 - 857 = -512
-512 ÷ 857 = -0.5974329054842473
-0.5974329054842473 x 100 = -59.74%