34.71% is the change from 510 to 687
Calculation steps:
[( 687 - 510 ) ÷ 510] x 100 = 34.71%
Formula
Percentage change = [(687 - 510) / 510] x 100
Subtract the new number by the original number
687 - 510 = 177
177 ÷ 510 = 0.34705882352941175
0.34705882352941175 x 100 = 34.71%