-54.96% is the change from 615 to 277
Calculation steps:
[( 277 - 615 ) ÷ 615] x 100 = -54.96%
Formula
Percentage change = [(277 - 615) / 615] x 100
Subtract the new number by the original number
277 - 615 = -338
-338 ÷ 615 = -0.5495934959349593
-0.5495934959349593 x 100 = -54.96%