-70.45% is the change from 511 to 151
Calculation steps:
[( 151 - 511 ) ÷ 511] x 100 = -70.45%
Formula
Percentage change = [(151 - 511) / 511] x 100
Subtract the new number by the original number
151 - 511 = -360
-360 ÷ 511 = -0.7045009784735812
-0.7045009784735812 x 100 = -70.45%