88.21% is the change from 509 to 958
Calculation steps:
[( 958 - 509 ) ÷ 509] x 100 = 88.21%
Formula
Percentage change = [(958 - 509) / 509] x 100
Subtract the new number by the original number
958 - 509 = 449
449 ÷ 509 = 0.8821218074656189
0.8821218074656189 x 100 = 88.21%