-66.99% is the change from 815 to 269
Calculation steps:
[( 269 - 815 ) ÷ 815] x 100 = -66.99%
Formula
Percentage change = [(269 - 815) / 815] x 100
Subtract the new number by the original number
269 - 815 = -546
-546 ÷ 815 = -0.6699386503067485
-0.6699386503067485 x 100 = -66.99%