-91.53% is the change from 815 to 69
Calculation steps:
[( 69 - 815 ) ÷ 815] x 100 = -91.53%
Formula
Percentage change = [(69 - 815) / 815] x 100
Subtract the new number by the original number
69 - 815 = -746
-746 ÷ 815 = -0.9153374233128835
-0.9153374233128835 x 100 = -91.53%