85.85% is the change from 509 to 946
Calculation steps:
[( 946 - 509 ) ÷ 509] x 100 = 85.85%
Formula
Percentage change = [(946 - 509) / 509] x 100
Subtract the new number by the original number
946 - 509 = 437
437 ÷ 509 = 0.8585461689587426
0.8585461689587426 x 100 = 85.85%