-63.13% is the change from 217 to 80
Calculation steps:
[( 80 - 217 ) ÷ 217] x 100 = -63.13%
Formula
Percentage change = [(80 - 217) / 217] x 100
Subtract the new number by the original number
80 - 217 = -137
-137 ÷ 217 = -0.631336405529954
-0.631336405529954 x 100 = -63.13%