-75% is the change from 408 to 102
Calculation steps:
[( 102 - 408 ) ÷ 408] x 100 = -75%
Formula
Percentage change = [(102 - 408) / 408] x 100
Subtract the new number by the original number
102 - 408 = -306
-306 ÷ 408 = -0.75
-0.75 x 100 = -75%
Example