-51.61% is the change from 217 to 105
Calculation steps:
[( 105 - 217 ) ÷ 217] x 100 = -51.61%
Formula
Percentage change = [(105 - 217) / 217] x 100
Subtract the new number by the original number
105 - 217 = -112
-112 ÷ 217 = -0.5161290322580645
-0.5161290322580645 x 100 = -51.61%