-13.48% is the change from 371 to 321
Calculation steps:
[( 321 - 371 ) ÷ 371] x 100 = -13.48%
Formula
Percentage change = [(321 - 371) / 371] x 100
Subtract the new number by the original number
321 - 371 = -50
-50 ÷ 371 = -0.1347708894878706
-0.1347708894878706 x 100 = -13.48%