-45.61% is the change from 820 to 446
Calculation steps:
[( 446 - 820 ) ÷ 820] x 100 = -45.61%
Formula
Percentage change = [(446 - 820) / 820] x 100
Subtract the new number by the original number
446 - 820 = -374
-374 ÷ 820 = -0.4560975609756098
-0.4560975609756098 x 100 = -45.61%