-30.99% is the change from 826 to 570
Calculation steps:
[( 570 - 826 ) ÷ 826] x 100 = -30.99%
Formula
Percentage change = [(570 - 826) / 826] x 100
Subtract the new number by the original number
570 - 826 = -256
-256 ÷ 826 = -0.3099273607748184
-0.3099273607748184 x 100 = -30.99%