-93.94% is the change from 66 to 4
Calculation steps:
[( 4 - 66 ) ÷ 66] x 100 = -93.94%
Formula
Percentage change = [(4 - 66) / 66] x 100
Subtract the new number by the original number
4 - 66 = -62
-62 ÷ 66 = -0.9393939393939394
-0.9393939393939394 x 100 = -93.94%