-34.16% is the change from 486 to 320
Calculation steps:
[( 320 - 486 ) ÷ 486] x 100 = -34.16%
Formula
Percentage change = [(320 - 486) / 486] x 100
Subtract the new number by the original number
320 - 486 = -166
-166 ÷ 486 = -0.34156378600823045
-0.34156378600823045 x 100 = -34.16%