-45.9% is the change from 122 to 66
Calculation steps:
[( 66 - 122 ) ÷ 122] x 100 = -45.9%
Formula
Percentage change = [(66 - 122) / 122] x 100
Subtract the new number by the original number
66 - 122 = -56
-56 ÷ 122 = -0.45901639344262296
-0.45901639344262296 x 100 = -45.9%