-30.18% is the change from 338 to 236
Calculation steps:
[( 236 - 338 ) ÷ 338] x 100 = -30.18%
Formula
Percentage change = [(236 - 338) / 338] x 100
Subtract the new number by the original number
236 - 338 = -102
-102 ÷ 338 = -0.30177514792899407
-0.30177514792899407 x 100 = -30.18%