-78.92% is the change from 389 to 82
Calculation steps:
[( 82 - 389 ) ÷ 389] x 100 = -78.92%
Formula
Percentage change = [(82 - 389) / 389] x 100
Subtract the new number by the original number
82 - 389 = -307
-307 ÷ 389 = -0.7892030848329049
-0.7892030848329049 x 100 = -78.92%