-87.27% is the change from 55 to 7
Calculation steps:
[( 7 - 55 ) ÷ 55] x 100 = -87.27%
Formula
Percentage change = [(7 - 55) / 55] x 100
Subtract the new number by the original number
7 - 55 = -48
-48 ÷ 55 = -0.8727272727272727
-0.8727272727272727 x 100 = -87.27%