19.41% is the change from 819 to 978
Calculation steps:
[( 978 - 819 ) ÷ 819] x 100 = 19.41%
Formula
Percentage change = [(978 - 819) / 819] x 100
Subtract the new number by the original number
978 - 819 = 159
159 ÷ 819 = 0.19413919413919414
0.19413919413919414 x 100 = 19.41%