-85.11% is the change from 470 to 70
Calculation steps:
[( 70 - 470 ) ÷ 470] x 100 = -85.11%
Formula
Percentage change = [(70 - 470) / 470] x 100
Subtract the new number by the original number
70 - 470 = -400
-400 ÷ 470 = -0.851063829787234
-0.851063829787234 x 100 = -85.11%