-43.59% is the change from 117 to 66
Calculation steps:
[( 66 - 117 ) ÷ 117] x 100 = -43.59%
Formula
Percentage change = [(66 - 117) / 117] x 100
Subtract the new number by the original number
66 - 117 = -51
-51 ÷ 117 = -0.4358974358974359
-0.4358974358974359 x 100 = -43.59%