-70.07% is the change from 902 to 270
Calculation steps:
[( 270 - 902 ) ÷ 902] x 100 = -70.07%
Formula
Percentage change = [(270 - 902) / 902] x 100
Subtract the new number by the original number
270 - 902 = -632
-632 ÷ 902 = -0.7006651884700665
-0.7006651884700665 x 100 = -70.07%