-64.13% is the change from 538 to 193
Calculation steps:
[( 193 - 538 ) ÷ 538] x 100 = -64.13%
Formula
Percentage change = [(193 - 538) / 538] x 100
Subtract the new number by the original number
193 - 538 = -345
-345 ÷ 538 = -0.6412639405204461
-0.6412639405204461 x 100 = -64.13%