84.49% is the change from 445 to 821
Calculation steps:
[( 821 - 445 ) ÷ 445] x 100 = 84.49%
Formula
Percentage change = [(821 - 445) / 445] x 100
Subtract the new number by the original number
821 - 445 = 376
376 ÷ 445 = 0.8449438202247191
0.8449438202247191 x 100 = 84.49%