-70.87% is the change from 913 to 266
Calculation steps:
[( 266 - 913 ) ÷ 913] x 100 = -70.87%
Formula
Percentage change = [(266 - 913) / 913] x 100
Subtract the new number by the original number
266 - 913 = -647
-647 ÷ 913 = -0.7086527929901424
-0.7086527929901424 x 100 = -70.87%