-83.72% is the change from 43 to 7
Calculation steps:
[( 7 - 43 ) ÷ 43] x 100 = -83.72%
Formula
Percentage change = [(7 - 43) / 43] x 100
Subtract the new number by the original number
7 - 43 = -36
-36 ÷ 43 = -0.8372093023255814
-0.8372093023255814 x 100 = -83.72%