-77.07% is the change from 266 to 61
Calculation steps:
[( 61 - 266 ) ÷ 266] x 100 = -77.07%
Formula
Percentage change = [(61 - 266) / 266] x 100
Subtract the new number by the original number
61 - 266 = -205
-205 ÷ 266 = -0.7706766917293233
-0.7706766917293233 x 100 = -77.07%