-35.94% is the change from 217 to 139
Calculation steps:
[( 139 - 217 ) ÷ 217] x 100 = -35.94%
Formula
Percentage change = [(139 - 217) / 217] x 100
Subtract the new number by the original number
139 - 217 = -78
-78 ÷ 217 = -0.35944700460829493
-0.35944700460829493 x 100 = -35.94%