70.73% is the change from 509 to 869
Calculation steps:
[( 869 - 509 ) ÷ 509] x 100 = 70.73%
Formula
Percentage change = [(869 - 509) / 509] x 100
Subtract the new number by the original number
869 - 509 = 360
360 ÷ 509 = 0.7072691552062869
0.7072691552062869 x 100 = 70.73%