-54.14% is the change from 580 to 266
Calculation steps:
[( 266 - 580 ) ÷ 580] x 100 = -54.14%
Formula
Percentage change = [(266 - 580) / 580] x 100
Subtract the new number by the original number
266 - 580 = -314
-314 ÷ 580 = -0.5413793103448276
-0.5413793103448276 x 100 = -54.14%