37.7% is the change from 512 to 705
Calculation steps:
[( 705 - 512 ) ÷ 512] x 100 = 37.7%
Formula
Percentage change = [(705 - 512) / 512] x 100
Subtract the new number by the original number
705 - 512 = 193
193 ÷ 512 = 0.376953125
0.376953125 x 100 = 37.7%