25.05% is the change from 515 to 644
Calculation steps:
[( 644 - 515 ) ÷ 515] x 100 = 25.05%
Formula
Percentage change = [(644 - 515) / 515] x 100
Subtract the new number by the original number
644 - 515 = 129
129 ÷ 515 = 0.2504854368932039
0.2504854368932039 x 100 = 25.05%