-77.89% is the change from 389 to 86
Calculation steps:
[( 86 - 389 ) ÷ 389] x 100 = -77.89%
Formula
Percentage change = [(86 - 389) / 389] x 100
Subtract the new number by the original number
86 - 389 = -303
-303 ÷ 389 = -0.7789203084832905
-0.7789203084832905 x 100 = -77.89%