77.33% is the change from 516 to 915
Calculation steps:
[( 915 - 516 ) ÷ 516] x 100 = 77.33%
Formula
Percentage change = [(915 - 516) / 516] x 100
Subtract the new number by the original number
915 - 516 = 399
399 ÷ 516 = 0.7732558139534884
0.7732558139534884 x 100 = 77.33%