-31.04% is the change from 335 to 231
Calculation steps:
[( 231 - 335 ) ÷ 335] x 100 = -31.04%
Formula
Percentage change = [(231 - 335) / 335] x 100
Subtract the new number by the original number
231 - 335 = -104
-104 ÷ 335 = -0.31044776119402984
-0.31044776119402984 x 100 = -31.04%