-70% is the change from 540 to 162
Calculation steps:
[( 162 - 540 ) ÷ 540] x 100 = -70%
Formula
Percentage change = [(162 - 540) / 540] x 100
Subtract the new number by the original number
162 - 540 = -378
-378 ÷ 540 = -0.7
-0.7 x 100 = -70%
Example