-90.6% is the change from 266 to 25
Calculation steps:
[( 25 - 266 ) ÷ 266] x 100 = -90.6%
Formula
Percentage change = [(25 - 266) / 266] x 100
Subtract the new number by the original number
25 - 266 = -241
-241 ÷ 266 = -0.9060150375939849
-0.9060150375939849 x 100 = -90.6%