-67.61% is the change from 815 to 264
Calculation steps:
[( 264 - 815 ) ÷ 815] x 100 = -67.61%
Formula
Percentage change = [(264 - 815) / 815] x 100
Subtract the new number by the original number
264 - 815 = -551
-551 ÷ 815 = -0.6760736196319018
-0.6760736196319018 x 100 = -67.61%