-48.23% is the change from 821 to 425
Calculation steps:
[( 425 - 821 ) ÷ 821] x 100 = -48.23%
Formula
Percentage change = [(425 - 821) / 821] x 100
Subtract the new number by the original number
425 - 821 = -396
-396 ÷ 821 = -0.4823386114494519
-0.4823386114494519 x 100 = -48.23%