87.42% is the change from 445 to 834
Calculation steps:
[( 834 - 445 ) ÷ 445] x 100 = 87.42%
Formula
Percentage change = [(834 - 445) / 445] x 100
Subtract the new number by the original number
834 - 445 = 389
389 ÷ 445 = 0.8741573033707866
0.8741573033707866 x 100 = 87.42%