-96.97% is the change from 66 to 2
Calculation steps:
[( 2 - 66 ) ÷ 66] x 100 = -96.97%
Formula
Percentage change = [(2 - 66) / 66] x 100
Subtract the new number by the original number
2 - 66 = -64
-64 ÷ 66 = -0.9696969696969697
-0.9696969696969697 x 100 = -96.97%