-92.2% is the change from 615 to 48
Calculation steps:
[( 48 - 615 ) ÷ 615] x 100 = -92.2%
Formula
Percentage change = [(48 - 615) / 615] x 100
Subtract the new number by the original number
48 - 615 = -567
-567 ÷ 615 = -0.9219512195121952
-0.9219512195121952 x 100 = -92.2%