72.3% is the change from 509 to 877
Calculation steps:
[( 877 - 509 ) ÷ 509] x 100 = 72.3%
Formula
Percentage change = [(877 - 509) / 509] x 100
Subtract the new number by the original number
877 - 509 = 368
368 ÷ 509 = 0.7229862475442044
0.7229862475442044 x 100 = 72.3%