-55.3% is the change from 604 to 270
Calculation steps:
[( 270 - 604 ) ÷ 604] x 100 = -55.3%
Formula
Percentage change = [(270 - 604) / 604] x 100
Subtract the new number by the original number
270 - 604 = -334
-334 ÷ 604 = -0.5529801324503312
-0.5529801324503312 x 100 = -55.3%