-38.97% is the change from 816 to 498
Calculation steps:
[( 498 - 816 ) ÷ 816] x 100 = -38.97%
Formula
Percentage change = [(498 - 816) / 816] x 100
Subtract the new number by the original number
498 - 816 = -318
-318 ÷ 816 = -0.3897058823529412
-0.3897058823529412 x 100 = -38.97%