73.16% is the change from 503 to 871
Calculation steps:
[( 871 - 503 ) ÷ 503] x 100 = 73.16%
Formula
Percentage change = [(871 - 503) / 503] x 100
Subtract the new number by the original number
871 - 503 = 368
368 ÷ 503 = 0.731610337972167
0.731610337972167 x 100 = 73.16%