-34.36% is the change from 486 to 319
Calculation steps:
[( 319 - 486 ) ÷ 486] x 100 = -34.36%
Formula
Percentage change = [(319 - 486) / 486] x 100
Subtract the new number by the original number
319 - 486 = -167
-167 ÷ 486 = -0.3436213991769547
-0.3436213991769547 x 100 = -34.36%