-83.87% is the change from 434 to 70
Calculation steps:
[( 70 - 434 ) ÷ 434] x 100 = -83.87%
Formula
Percentage change = [(70 - 434) / 434] x 100
Subtract the new number by the original number
70 - 434 = -364
-364 ÷ 434 = -0.8387096774193549
-0.8387096774193549 x 100 = -83.87%