81.19% is the change from 452 to 819
Calculation steps:
[( 819 - 452 ) ÷ 452] x 100 = 81.19%
Formula
Percentage change = [(819 - 452) / 452] x 100
Subtract the new number by the original number
819 - 452 = 367
367 ÷ 452 = 0.8119469026548672
0.8119469026548672 x 100 = 81.19%