-13.24% is the change from 370 to 321
Calculation steps:
[( 321 - 370 ) ÷ 370] x 100 = -13.24%
Formula
Percentage change = [(321 - 370) / 370] x 100
Subtract the new number by the original number
321 - 370 = -49
-49 ÷ 370 = -0.13243243243243244
-0.13243243243243244 x 100 = -13.24%