-38.41% is the change from 807 to 497
Calculation steps:
[( 497 - 807 ) ÷ 807] x 100 = -38.41%
Formula
Percentage change = [(497 - 807) / 807] x 100
Subtract the new number by the original number
497 - 807 = -310
-310 ÷ 807 = -0.38413878562577447
-0.38413878562577447 x 100 = -38.41%