-93.45% is the change from 229 to 15
Calculation steps:
[( 15 - 229 ) ÷ 229] x 100 = -93.45%
Formula
Percentage change = [(15 - 229) / 229] x 100
Subtract the new number by the original number
15 - 229 = -214
-214 ÷ 229 = -0.9344978165938864
-0.9344978165938864 x 100 = -93.45%