35.49% is the change from 510 to 691
Calculation steps:
[( 691 - 510 ) ÷ 510] x 100 = 35.49%
Formula
Percentage change = [(691 - 510) / 510] x 100
Subtract the new number by the original number
691 - 510 = 181
181 ÷ 510 = 0.35490196078431374
0.35490196078431374 x 100 = 35.49%