-26.73% is the change from 217 to 159
Calculation steps:
[( 159 - 217 ) ÷ 217] x 100 = -26.73%
Formula
Percentage change = [(159 - 217) / 217] x 100
Subtract the new number by the original number
159 - 217 = -58
-58 ÷ 217 = -0.2672811059907834
-0.2672811059907834 x 100 = -26.73%