-66.58% is the change from 808 to 270
Calculation steps:
[( 270 - 808 ) ÷ 808] x 100 = -66.58%
Formula
Percentage change = [(270 - 808) / 808] x 100
Subtract the new number by the original number
270 - 808 = -538
-538 ÷ 808 = -0.6658415841584159
-0.6658415841584159 x 100 = -66.58%