-70.61% is the change from 820 to 241
Calculation steps:
[( 241 - 820 ) ÷ 820] x 100 = -70.61%
Formula
Percentage change = [(241 - 820) / 820] x 100
Subtract the new number by the original number
241 - 820 = -579
-579 ÷ 820 = -0.7060975609756097
-0.7060975609756097 x 100 = -70.61%