20.3% is the change from 813 to 978
Calculation steps:
[( 978 - 813 ) ÷ 813] x 100 = 20.3%
Formula
Percentage change = [(978 - 813) / 813] x 100
Subtract the new number by the original number
978 - 813 = 165
165 ÷ 813 = 0.2029520295202952
0.2029520295202952 x 100 = 20.3%