-83.85% is the change from 260 to 42
Calculation steps:
[( 42 - 260 ) ÷ 260] x 100 = -83.85%
Formula
Percentage change = [(42 - 260) / 260] x 100
Subtract the new number by the original number
42 - 260 = -218
-218 ÷ 260 = -0.8384615384615385
-0.8384615384615385 x 100 = -83.85%