-17.8% is the change from 590 to 485
Calculation steps:
[( 485 - 590 ) ÷ 590] x 100 = -17.8%
Formula
Percentage change = [(485 - 590) / 590] x 100
Subtract the new number by the original number
485 - 590 = -105
-105 ÷ 590 = -0.17796610169491525
-0.17796610169491525 x 100 = -17.8%