-82.71% is the change from 480 to 83
Calculation steps:
[( 83 - 480 ) ÷ 480] x 100 = -82.71%
Formula
Percentage change = [(83 - 480) / 480] x 100
Subtract the new number by the original number
83 - 480 = -397
-397 ÷ 480 = -0.8270833333333333
-0.8270833333333333 x 100 = -82.71%