78.49% is the change from 516 to 921
Calculation steps:
[( 921 - 516 ) ÷ 516] x 100 = 78.49%
Formula
Percentage change = [(921 - 516) / 516] x 100
Subtract the new number by the original number
921 - 516 = 405
405 ÷ 516 = 0.7848837209302325
0.7848837209302325 x 100 = 78.49%