0.2% is the change from 501 to 502
Calculation steps:
[( 502 - 501 ) ÷ 501] x 100 = 0.2%
Formula
Percentage change = [(502 - 501) / 501] x 100
Subtract the new number by the original number
502 - 501 = 1
1 ÷ 501 = 0.001996007984031936
0.001996007984031936 x 100 = 0.2%