-18.18% is the change from 319 to 261
Calculation steps:
[( 261 - 319 ) ÷ 319] x 100 = -18.18%
Formula
Percentage change = [(261 - 319) / 319] x 100
Subtract the new number by the original number
261 - 319 = -58
-58 ÷ 319 = -0.18181818181818182
-0.18181818181818182 x 100 = -18.18%