-67.48% is the change from 821 to 267
Calculation steps:
[( 267 - 821 ) ÷ 821] x 100 = -67.48%
Formula
Percentage change = [(267 - 821) / 821] x 100
Subtract the new number by the original number
267 - 821 = -554
-554 ÷ 821 = -0.6747868453105969
-0.6747868453105969 x 100 = -67.48%