-30.84% is the change from 334 to 231
Calculation steps:
[( 231 - 334 ) ÷ 334] x 100 = -30.84%
Formula
Percentage change = [(231 - 334) / 334] x 100
Subtract the new number by the original number
231 - 334 = -103
-103 ÷ 334 = -0.3083832335329341
-0.3083832335329341 x 100 = -30.84%