884.09% is the change from 88 to 866
Calculation steps:
[( 866 - 88 ) ÷ 88] x 100 = 884.09%
Formula
Percentage change = [(866 - 88) / 88] x 100
Subtract the new number by the original number
866 - 88 = 778
778 ÷ 88 = 8.840909090909092
8.840909090909092 x 100 = 884.09%