3.94% is the change from 813 to 845
Calculation steps:
[( 845 - 813 ) ÷ 813] x 100 = 3.94%
Formula
Percentage change = [(845 - 813) / 813] x 100
Subtract the new number by the original number
845 - 813 = 32
32 ÷ 813 = 0.03936039360393604
0.03936039360393604 x 100 = 3.94%