-77.46% is the change from 670 to 151
Calculation steps:
[( 151 - 670 ) ÷ 670] x 100 = -77.46%
Formula
Percentage change = [(151 - 670) / 670] x 100
Subtract the new number by the original number
151 - 670 = -519
-519 ÷ 670 = -0.7746268656716417
-0.7746268656716417 x 100 = -77.46%