83.6% is the change from 445 to 817
Calculation steps:
[( 817 - 445 ) ÷ 445] x 100 = 83.6%
Formula
Percentage change = [(817 - 445) / 445] x 100
Subtract the new number by the original number
817 - 445 = 372
372 ÷ 445 = 0.8359550561797753
0.8359550561797753 x 100 = 83.6%