34.57% is the change from 512 to 689
Calculation steps:
[( 689 - 512 ) ÷ 512] x 100 = 34.57%
Formula
Percentage change = [(689 - 512) / 512] x 100
Subtract the new number by the original number
689 - 512 = 177
177 ÷ 512 = 0.345703125
0.345703125 x 100 = 34.57%