-19.97% is the change from 611 to 489
Calculation steps:
[( 489 - 611 ) ÷ 611] x 100 = -19.97%
Formula
Percentage change = [(489 - 611) / 611] x 100
Subtract the new number by the original number
489 - 611 = -122
-122 ÷ 611 = -0.19967266775777415
-0.19967266775777415 x 100 = -19.97%