88.8% is the change from 509 to 961
Calculation steps:
[( 961 - 509 ) ÷ 509] x 100 = 88.8%
Formula
Percentage change = [(961 - 509) / 509] x 100
Subtract the new number by the original number
961 - 509 = 452
452 ÷ 509 = 0.888015717092338
0.888015717092338 x 100 = 88.8%