-69.97% is the change from 899 to 270
Calculation steps:
[( 270 - 899 ) ÷ 899] x 100 = -69.97%
Formula
Percentage change = [(270 - 899) / 899] x 100
Subtract the new number by the original number
270 - 899 = -629
-629 ÷ 899 = -0.699666295884316
-0.699666295884316 x 100 = -69.97%