22.77% is the change from 505 to 620
Calculation steps:
[( 620 - 505 ) ÷ 505] x 100 = 22.77%
Formula
Percentage change = [(620 - 505) / 505] x 100
Subtract the new number by the original number
620 - 505 = 115
115 ÷ 505 = 0.22772277227722773
0.22772277227722773 x 100 = 22.77%