-27.51% is the change from 229 to 166
Calculation steps:
[( 166 - 229 ) ÷ 229] x 100 = -27.51%
Formula
Percentage change = [(166 - 229) / 229] x 100
Subtract the new number by the original number
166 - 229 = -63
-63 ÷ 229 = -0.27510917030567683
-0.27510917030567683 x 100 = -27.51%