-88.89% is the change from 666 to 74
Calculation steps:
[( 74 - 666 ) ÷ 666] x 100 = -88.89%
Formula
Percentage change = [(74 - 666) / 666] x 100
Subtract the new number by the original number
74 - 666 = -592
-592 ÷ 666 = -0.8888888888888888
-0.8888888888888888 x 100 = -88.89%