-78.5% is the change from 386 to 83
Calculation steps:
[( 83 - 386 ) ÷ 386] x 100 = -78.5%
Formula
Percentage change = [(83 - 386) / 386] x 100
Subtract the new number by the original number
83 - 386 = -303
-303 ÷ 386 = -0.7849740932642487
-0.7849740932642487 x 100 = -78.5%