-70.22% is the change from 816 to 243
Calculation steps:
[( 243 - 816 ) ÷ 816] x 100 = -70.22%
Formula
Percentage change = [(243 - 816) / 816] x 100
Subtract the new number by the original number
243 - 816 = -573
-573 ÷ 816 = -0.7022058823529411
-0.7022058823529411 x 100 = -70.22%