-26.17% is the change from 321 to 237
Calculation steps:
[( 237 - 321 ) ÷ 321] x 100 = -26.17%
Formula
Percentage change = [(237 - 321) / 321] x 100
Subtract the new number by the original number
237 - 321 = -84
-84 ÷ 321 = -0.2616822429906542
-0.2616822429906542 x 100 = -26.17%