65.61% is the change from 503 to 833
Calculation steps:
[( 833 - 503 ) ÷ 503] x 100 = 65.61%
Formula
Percentage change = [(833 - 503) / 503] x 100
Subtract the new number by the original number
833 - 503 = 330
330 ÷ 503 = 0.6560636182902585
0.6560636182902585 x 100 = 65.61%