34.18% is the change from 512 to 687
Calculation steps:
[( 687 - 512 ) ÷ 512] x 100 = 34.18%
Formula
Percentage change = [(687 - 512) / 512] x 100
Subtract the new number by the original number
687 - 512 = 175
175 ÷ 512 = 0.341796875
0.341796875 x 100 = 34.18%