69.94% is the change from 509 to 865
Calculation steps:
[( 865 - 509 ) ÷ 509] x 100 = 69.94%
Formula
Percentage change = [(865 - 509) / 509] x 100
Subtract the new number by the original number
865 - 509 = 356
356 ÷ 509 = 0.6994106090373281
0.6994106090373281 x 100 = 69.94%