37.3% is the change from 512 to 703
Calculation steps:
[( 703 - 512 ) ÷ 512] x 100 = 37.3%
Formula
Percentage change = [(703 - 512) / 512] x 100
Subtract the new number by the original number
703 - 512 = 191
191 ÷ 512 = 0.373046875
0.373046875 x 100 = 37.3%