-37.95% is the change from 166 to 103
Calculation steps:
[( 103 - 166 ) ÷ 166] x 100 = -37.95%
Formula
Percentage change = [(103 - 166) / 166] x 100
Subtract the new number by the original number
103 - 166 = -63
-63 ÷ 166 = -0.3795180722891566
-0.3795180722891566 x 100 = -37.95%