-61.65% is the change from 266 to 102
Calculation steps:
[( 102 - 266 ) ÷ 266] x 100 = -61.65%
Formula
Percentage change = [(102 - 266) / 266] x 100
Subtract the new number by the original number
102 - 266 = -164
-164 ÷ 266 = -0.6165413533834586
-0.6165413533834586 x 100 = -61.65%