-55.56% is the change from 666 to 296
Calculation steps:
[( 296 - 666 ) ÷ 666] x 100 = -55.56%
Formula
Percentage change = [(296 - 666) / 666] x 100
Subtract the new number by the original number
296 - 666 = -370
-370 ÷ 666 = -0.5555555555555556
-0.5555555555555556 x 100 = -55.56%