-45.05% is the change from 566 to 311
Calculation steps:
[( 311 - 566 ) ÷ 566] x 100 = -45.05%
Formula
Percentage change = [(311 - 566) / 566] x 100
Subtract the new number by the original number
311 - 566 = -255
-255 ÷ 566 = -0.450530035335689
-0.450530035335689 x 100 = -45.05%