77.69% is the change from 511 to 908
Calculation steps:
[( 908 - 511 ) ÷ 511] x 100 = 77.69%
Formula
Percentage change = [(908 - 511) / 511] x 100
Subtract the new number by the original number
908 - 511 = 397
397 ÷ 511 = 0.776908023483366
0.776908023483366 x 100 = 77.69%