-30.11% is the change from 797 to 557
Calculation steps:
[( 557 - 797 ) ÷ 797] x 100 = -30.11%
Formula
Percentage change = [(557 - 797) / 797] x 100
Subtract the new number by the original number
557 - 797 = -240
-240 ÷ 797 = -0.30112923462986196
-0.30112923462986196 x 100 = -30.11%