-31.04% is the change from 670 to 462
Calculation steps:
[( 462 - 670 ) ÷ 670] x 100 = -31.04%
Formula
Percentage change = [(462 - 670) / 670] x 100
Subtract the new number by the original number
462 - 670 = -208
-208 ÷ 670 = -0.31044776119402984
-0.31044776119402984 x 100 = -31.04%