-79.2% is the change from 375 to 78
Calculation steps:
[( 78 - 375 ) ÷ 375] x 100 = -79.2%
Formula
Percentage change = [(78 - 375) / 375] x 100
Subtract the new number by the original number
78 - 375 = -297
-297 ÷ 375 = -0.792
-0.792 x 100 = -79.2%
Example