62.79% is the change from 516 to 840
Calculation steps:
[( 840 - 516 ) ÷ 516] x 100 = 62.79%
Formula
Percentage change = [(840 - 516) / 516] x 100
Subtract the new number by the original number
840 - 516 = 324
324 ÷ 516 = 0.627906976744186
0.627906976744186 x 100 = 62.79%