19.29% is the change from 819 to 977
Calculation steps:
[( 977 - 819 ) ÷ 819] x 100 = 19.29%
Formula
Percentage change = [(977 - 819) / 819] x 100
Subtract the new number by the original number
977 - 819 = 158
158 ÷ 819 = 0.19291819291819293
0.19291819291819293 x 100 = 19.29%