-80.08% is the change from 266 to 53
Calculation steps:
[( 53 - 266 ) ÷ 266] x 100 = -80.08%
Formula
Percentage change = [(53 - 266) / 266] x 100
Subtract the new number by the original number
53 - 266 = -213
-213 ÷ 266 = -0.8007518796992481
-0.8007518796992481 x 100 = -80.08%