-20.45% is the change from 670 to 533
Calculation steps:
[( 533 - 670 ) ÷ 670] x 100 = -20.45%
Formula
Percentage change = [(533 - 670) / 670] x 100
Subtract the new number by the original number
533 - 670 = -137
-137 ÷ 670 = -0.2044776119402985
-0.2044776119402985 x 100 = -20.45%