-49.07% is the change from 970 to 494
Calculation steps:
[( 494 - 970 ) ÷ 970] x 100 = -49.07%
Formula
Percentage change = [(494 - 970) / 970] x 100
Subtract the new number by the original number
494 - 970 = -476
-476 ÷ 970 = -0.49072164948453606
-0.49072164948453606 x 100 = -49.07%