-50.47% is the change from 537 to 266
Calculation steps:
[( 266 - 537 ) ÷ 537] x 100 = -50.47%
Formula
Percentage change = [(266 - 537) / 537] x 100
Subtract the new number by the original number
266 - 537 = -271
-271 ÷ 537 = -0.5046554934823091
-0.5046554934823091 x 100 = -50.47%