-34.19% is the change from 351 to 231
Calculation steps:
[( 231 - 351 ) ÷ 351] x 100 = -34.19%
Formula
Percentage change = [(231 - 351) / 351] x 100
Subtract the new number by the original number
231 - 351 = -120
-120 ÷ 351 = -0.3418803418803419
-0.3418803418803419 x 100 = -34.19%