51.88% is the change from 613 to 931
Calculation steps:
[( 931 - 613 ) ÷ 613] x 100 = 51.88%
Formula
Percentage change = [(931 - 613) / 613] x 100
Subtract the new number by the original number
931 - 613 = 318
318 ÷ 613 = 0.5187601957585645
0.5187601957585645 x 100 = 51.88%