-34.19% is the change from 816 to 537
Calculation steps:
[( 537 - 816 ) ÷ 816] x 100 = -34.19%
Formula
Percentage change = [(537 - 816) / 816] x 100
Subtract the new number by the original number
537 - 816 = -279
-279 ÷ 816 = -0.34191176470588236
-0.34191176470588236 x 100 = -34.19%