-69.09% is the change from 55 to 17
Calculation steps:
[( 17 - 55 ) ÷ 55] x 100 = -69.09%
Formula
Percentage change = [(17 - 55) / 55] x 100
Subtract the new number by the original number
17 - 55 = -38
-38 ÷ 55 = -0.6909090909090909
-0.6909090909090909 x 100 = -69.09%