165.94% is the change from 320 to 851
Calculation steps:
[( 851 - 320 ) ÷ 320] x 100 = 165.94%
Formula
Percentage change = [(851 - 320) / 320] x 100
Subtract the new number by the original number
851 - 320 = 531
531 ÷ 320 = 1.659375
1.659375 x 100 = 165.94%