-45.49% is the change from 266 to 145
Calculation steps:
[( 145 - 266 ) ÷ 266] x 100 = -45.49%
Formula
Percentage change = [(145 - 266) / 266] x 100
Subtract the new number by the original number
145 - 266 = -121
-121 ÷ 266 = -0.4548872180451128
-0.4548872180451128 x 100 = -45.49%