-56.25% is the change from 16 to 7
Calculation steps:
[( 7 - 16 ) ÷ 16] x 100 = -56.25%
Formula
Percentage change = [(7 - 16) / 16] x 100
Subtract the new number by the original number
7 - 16 = -9
-9 ÷ 16 = -0.5625
-0.5625 x 100 = -56.25%
Example