-95.61% is the change from 615 to 27
Calculation steps:
[( 27 - 615 ) ÷ 615] x 100 = -95.61%
Formula
Percentage change = [(27 - 615) / 615] x 100
Subtract the new number by the original number
27 - 615 = -588
-588 ÷ 615 = -0.9560975609756097
-0.9560975609756097 x 100 = -95.61%