-71.75% is the change from 308 to 87
Calculation steps:
[( 87 - 308 ) ÷ 308] x 100 = -71.75%
Formula
Percentage change = [(87 - 308) / 308] x 100
Subtract the new number by the original number
87 - 308 = -221
-221 ÷ 308 = -0.7175324675324676
-0.7175324675324676 x 100 = -71.75%