76.23% is the change from 509 to 897
Calculation steps:
[( 897 - 509 ) ÷ 509] x 100 = 76.23%
Formula
Percentage change = [(897 - 509) / 509] x 100
Subtract the new number by the original number
897 - 509 = 388
388 ÷ 509 = 0.762278978388998
0.762278978388998 x 100 = 76.23%