> An energy loss of 42 to 67.5 percent of naturally means that it takes 42 to 67.5 percent more effort or time to power a device (say, a blender) via electricity compared to powering the same device mechanically.

Nope. If input is 100W, loss is 60%, and resulting in output of 40W, then to increase output to 100W you don't need 60% more input (which would output 64W) you need 150% more input.