-91.49% is the change from 47 to 4
Calculation steps:
[( 4 - 47 ) ÷ 47] x 100 = -91.49%
Formula
Percentage change = [(4 - 47) / 47] x 100
Subtract the new number by the original number
4 - 47 = -43
-43 ÷ 47 = -0.9148936170212766
-0.9148936170212766 x 100 = -91.49%