85.66% is the change from 509 to 945
Calculation steps:
[( 945 - 509 ) ÷ 509] x 100 = 85.66%
Formula
Percentage change = [(945 - 509) / 509] x 100
Subtract the new number by the original number
945 - 509 = 436
436 ÷ 509 = 0.8565815324165029
0.8565815324165029 x 100 = 85.66%