61.88% is the change from 320 to 518
Calculation steps:
[( 518 - 320 ) ÷ 320] x 100 = 61.88%
Formula
Percentage change = [(518 - 320) / 320] x 100
Subtract the new number by the original number
518 - 320 = 198
198 ÷ 320 = 0.61875
0.61875 x 100 = 61.88%