-55.3% is the change from 217 to 97
Calculation steps:
[( 97 - 217 ) ÷ 217] x 100 = -55.3%
Formula
Percentage change = [(97 - 217) / 217] x 100
Subtract the new number by the original number
97 - 217 = -120
-120 ÷ 217 = -0.5529953917050692
-0.5529953917050692 x 100 = -55.3%