-69.21% is the change from 838 to 258
Calculation steps:
[( 258 - 838 ) ÷ 838] x 100 = -69.21%
Formula
Percentage change = [(258 - 838) / 838] x 100
Subtract the new number by the original number
258 - 838 = -580
-580 ÷ 838 = -0.6921241050119332
-0.6921241050119332 x 100 = -69.21%