-34.56% is the change from 816 to 534
Calculation steps:
[( 534 - 816 ) ÷ 816] x 100 = -34.56%
Formula
Percentage change = [(534 - 816) / 816] x 100
Subtract the new number by the original number
534 - 816 = -282
-282 ÷ 816 = -0.34558823529411764
-0.34558823529411764 x 100 = -34.56%