-66.1% is the change from 826 to 280
Calculation steps:
[( 280 - 826 ) ÷ 826] x 100 = -66.1%
Formula
Percentage change = [(280 - 826) / 826] x 100
Subtract the new number by the original number
280 - 826 = -546
-546 ÷ 826 = -0.6610169491525424
-0.6610169491525424 x 100 = -66.1%