-41.22% is the change from 820 to 482
Calculation steps:
[( 482 - 820 ) ÷ 820] x 100 = -41.22%
Formula
Percentage change = [(482 - 820) / 820] x 100
Subtract the new number by the original number
482 - 820 = -338
-338 ÷ 820 = -0.4121951219512195
-0.4121951219512195 x 100 = -41.22%