84.68% is the change from 509 to 940
Calculation steps:
[( 940 - 509 ) ÷ 509] x 100 = 84.68%
Formula
Percentage change = [(940 - 509) / 509] x 100
Subtract the new number by the original number
940 - 509 = 431
431 ÷ 509 = 0.8467583497053045
0.8467583497053045 x 100 = 84.68%