-20.13% is the change from 611 to 488
Calculation steps:
[( 488 - 611 ) ÷ 611] x 100 = -20.13%
Formula
Percentage change = [(488 - 611) / 611] x 100
Subtract the new number by the original number
488 - 611 = -123
-123 ÷ 611 = -0.20130932896890344
-0.20130932896890344 x 100 = -20.13%