167.81% is the change from 320 to 857
Calculation steps:
[( 857 - 320 ) ÷ 320] x 100 = 167.81%
Formula
Percentage change = [(857 - 320) / 320] x 100
Subtract the new number by the original number
857 - 320 = 537
537 ÷ 320 = 1.678125
1.678125 x 100 = 167.81%