93.91% is the change from 509 to 987
Calculation steps:
[( 987 - 509 ) ÷ 509] x 100 = 93.91%
Formula
Percentage change = [(987 - 509) / 509] x 100
Subtract the new number by the original number
987 - 509 = 478
478 ÷ 509 = 0.9390962671905697
0.9390962671905697 x 100 = 93.91%