-75% is the change from 16 to 4
Calculation steps:
[( 4 - 16 ) ÷ 16] x 100 = -75%
Formula
Percentage change = [(4 - 16) / 16] x 100
Subtract the new number by the original number
4 - 16 = -12
-12 ÷ 16 = -0.75
-0.75 x 100 = -75%
Example