25.24% is the change from 515 to 645
Calculation steps:
[( 645 - 515 ) ÷ 515] x 100 = 25.24%
Formula
Percentage change = [(645 - 515) / 515] x 100
Subtract the new number by the original number
645 - 515 = 130
130 ÷ 515 = 0.2524271844660194
0.2524271844660194 x 100 = 25.24%