-67.23% is the change from 824 to 270
Calculation steps:
[( 270 - 824 ) ÷ 824] x 100 = -67.23%
Formula
Percentage change = [(270 - 824) / 824] x 100
Subtract the new number by the original number
270 - 824 = -554
-554 ÷ 824 = -0.6723300970873787
-0.6723300970873787 x 100 = -67.23%