94.3% is the change from 509 to 989
Calculation steps:
[( 989 - 509 ) ÷ 509] x 100 = 94.3%
Formula
Percentage change = [(989 - 509) / 509] x 100
Subtract the new number by the original number
989 - 509 = 480
480 ÷ 509 = 0.9430255402750491
0.9430255402750491 x 100 = 94.3%