64.26% is the change from 305 to 501
Calculation steps:
[( 501 - 305 ) ÷ 305] x 100 = 64.26%
Formula
Percentage change = [(501 - 305) / 305] x 100
Subtract the new number by the original number
501 - 305 = 196
196 ÷ 305 = 0.6426229508196721
0.6426229508196721 x 100 = 64.26%