-53.21% is the change from 577 to 270
Calculation steps:
[( 270 - 577 ) ÷ 577] x 100 = -53.21%
Formula
Percentage change = [(270 - 577) / 577] x 100
Subtract the new number by the original number
270 - 577 = -307
-307 ÷ 577 = -0.5320623916811091
-0.5320623916811091 x 100 = -53.21%