-69.18% is the change from 821 to 253
Calculation steps:
[( 253 - 821 ) ÷ 821] x 100 = -69.18%
Formula
Percentage change = [(253 - 821) / 821] x 100
Subtract the new number by the original number
253 - 821 = -568
-568 ÷ 821 = -0.6918392204628502
-0.6918392204628502 x 100 = -69.18%