-14.4% is the change from 375 to 321
Calculation steps:
[( 321 - 375 ) ÷ 375] x 100 = -14.4%
Formula
Percentage change = [(321 - 375) / 375] x 100
Subtract the new number by the original number
321 - 375 = -54
-54 ÷ 375 = -0.144
-0.144 x 100 = -14.4%