-69.87% is the change from 853 to 257
Calculation steps:
[( 257 - 853 ) ÷ 853] x 100 = -69.87%
Formula
Percentage change = [(257 - 853) / 853] x 100
Subtract the new number by the original number
257 - 853 = -596
-596 ÷ 853 = -0.6987104337631888
-0.6987104337631888 x 100 = -69.87%