61.25% is the change from 320 to 516
Calculation steps:
[( 516 - 320 ) ÷ 320] x 100 = 61.25%
Formula
Percentage change = [(516 - 320) / 320] x 100
Subtract the new number by the original number
516 - 320 = 196
196 ÷ 320 = 0.6125
0.6125 x 100 = 61.25%