77.5% is the change from 511 to 907
Calculation steps:
[( 907 - 511 ) ÷ 511] x 100 = 77.5%
Formula
Percentage change = [(907 - 511) / 511] x 100
Subtract the new number by the original number
907 - 511 = 396
396 ÷ 511 = 0.7749510763209393
0.7749510763209393 x 100 = 77.5%