-82.63% is the change from 380 to 66
Calculation steps:
[( 66 - 380 ) ÷ 380] x 100 = -82.63%
Formula
Percentage change = [(66 - 380) / 380] x 100
Subtract the new number by the original number
66 - 380 = -314
-314 ÷ 380 = -0.8263157894736842
-0.8263157894736842 x 100 = -82.63%