-7.8% is the change from 897 to 827
Calculation steps:
[( 827 - 897 ) ÷ 897] x 100 = -7.8%
Formula
Percentage change = [(827 - 897) / 897] x 100
Subtract the new number by the original number
827 - 897 = -70
-70 ÷ 897 = -0.07803790412486064
-0.07803790412486064 x 100 = -7.8%