159.06% is the change from 320 to 829
Calculation steps:
[( 829 - 320 ) ÷ 320] x 100 = 159.06%
Formula
Percentage change = [(829 - 320) / 320] x 100
Subtract the new number by the original number
829 - 320 = 509
509 ÷ 320 = 1.590625
1.590625 x 100 = 159.06%