-75% is the change from 4 to 1
Calculation steps:
[( 1 - 4 ) ÷ 4] x 100 = -75%
Formula
Percentage change = [(1 - 4) / 4] x 100
Subtract the new number by the original number
1 - 4 = -3
-3 ÷ 4 = -0.75
-0.75 x 100 = -75%
Example