20.86% is the change from 513 to 620
Calculation steps:
[( 620 - 513 ) ÷ 513] x 100 = 20.86%
Formula
Percentage change = [(620 - 513) / 513] x 100
Subtract the new number by the original number
620 - 513 = 107
107 ÷ 513 = 0.20857699805068225
0.20857699805068225 x 100 = 20.86%