0.37% is the change from 818 to 821
Calculation steps:
[( 821 - 818 ) ÷ 818] x 100 = 0.37%
Formula
Percentage change = [(821 - 818) / 818] x 100
Subtract the new number by the original number
821 - 818 = 3
3 ÷ 818 = 0.003667481662591687
0.003667481662591687 x 100 = 0.37%